France boss Laurent Blanc felt that Tuesday night's 4-0 friendly win over Estonia exposed some defensive deficiencies he needs to work on ahead of their Euro 2012 opener against England.
Karim Benzema bagged a brace, while Franck Ribery and Jeremy Menez were also on target as Les Bleus completed their warm-up program with a comfortable win in Le Mans.
However, while Blanc admitted that the victory had been good for morale, he was concerned by his side's susceptibility to Estonia's quickfire counter-attacks.
"It's always better to win, even if it's just friendly matches and the opposition tonight [Tuesday] were not as strong as Iceland and Serbia," the former Bordeaux boss told TF1. "It was important for players to gain confidence from an individual perspective, though, ironically, I felt that the defence was not good enough.
"We got in trouble on some plays and we had to do some tinkering at the break. I'm not worrying, but I am not sure about certain things. But I do not want to complicate matters and we hope to be ready [for England] on June 11."
France faces Roy Hodgson's troops in Donetsk and must tackle co-hosts Ukraine at the same venue before completing their Group D campaign against Sweden in Kiev.
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